2005 PONTIAC GTO Differential & Rear-End Components

Ring and Pinion Installation Kit, Master Kit, GM 7.75 IRS, Kit

Part Number: MGR-R80RMK

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Estimated Ship Date: Today

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Gear, Ring and Pinion, 3.70:1 Ratio, 7.75 in. IRS, Pontiac, Set

Part Number: MGR-G80370

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Ring and Pinion Gears, GM 7.75 in. IRS, 4.11:1 Ratio, 27-spline, Standard Rotation, Rear, Pontiac, Set

Part Number: MGR-G80411

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Estimated Ship Date: Oct 10, 2025 if ordered today

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Gear, Ring and Pinion, 3.90:1 Ratio, 7.75 in. IRS, Pontiac, Set

Part Number: MGR-G80390

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Oct 8, 2025 if ordered today

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